Process for pressing yeast.



E. A. MEYER.

PROCESS FOR PRESSWG YEAST. APPLICATION FILED NOV. 12. 1911.

l;;268,865.. Y Pafentedilune 11,1918. I y I S11EETS-SHEETI- ma ma BA. MEYER.

PROCESS FOR PRESSING YEAST. APPLICATION FILED NOV. 12.'t911.

Extent-ed 3mm 11, 1918.

2 SHEETS-SHEET 2| mm ALFRED MEYER, F CLIFTON, BRISTOL, ENGMND.

PROCESS FOR PRIESSING YEAST.

fipe'clflcatlon of Letters Patent.

Patented June ill, ilhdd.

Application filed November 12, 1917. Serial No. 201,5?1.

' To all whom it may concern:

Be it knonii that I, EJ'NAR ALFRED MEYER, a subject of the King of Denmark, residing at 38 Ganynge Square, Clifton, Bristol, England have invented a new andv useful Improved Process for Pressing Yeast, of which the following is a specification.

This invention relates to an improved. process for pressing yeast, in which the li uid containing the yeast is separated from 't, y air pressure.

In the manufacture of yeast as at present practised filter presses are employed which cost considerable sums and require a greet deal of labor and care in working. By the present process an increased yield of yeast is obtained and the yeast cells are not dorm aged, and the process is less costly.

- According to this invention the yeast is pressed b of a revo ving drum" from which the air is exhausted and which extends into a vessel containing yeast. The dry outer layer of the deposited yeast is removed by a knife, leaving the damp inner layer on the drum, which inner layer prevents the vacuum from being broken. In order, however, to insure that the vacuum is not broken I arrange beneath and in proximity to the knife a perforated pipe which supplies liquid containing yeast to the drum.

The accompanying drawings illustratc an apparatus by which my invention inn carried out. Fig. 1 is a elevation, Fig;

53 a plan and Fig, 3 an end elevation.

The liquid containing yenstis stored in a vessel (1 from which it is supplied to a tank Z) through pipe ,0 which extends the length of. the tank and is perforated at the side nearest the drum, the flow from the vessel o a being regulated by cocks d and e. A perjointed conical ,drum 7, Whose surface is covered with a filter clothor like material and whose ends are closed, is ,inounted on trunnions g supported by bearings 71,. The

drum f isrevolved quickly when the drum is being spi'aywl before the removal operation by moans of a toothed Wheel 2' gesrin with another" toothed Wheel. g on a shaft 0 which is revolved by a belt running on a a belt running on a pulley u.

being deposited on the surface pulley -2 ozsloivlydiii iiigtheremovol operation through a toothed Wheel m on a shaft in having on it another toothed Wheel 0 in gear with a pinion p on a shaft on which shaft is a toothed Wheel 7' geanngvvith a pinion s on a sleeve'tywlrich is revolved by Thedruin f as it revolves passes through the liquid in the tank 6 and at the same time liquid from the perforated portion of the pipe 0 is sprayed upon the surface of the drum. As the air is exhausted from the drum f through a pipe o passing through the trunnions g in layer of yeast is deposited on the exterior surface of the drum. v

The yeast is removed from the drum by rnem of a knife wrest-ingon a her a: and carried at the ends of arms 9 mounted on eccentrics at the ends of a shaft 2, so that the distance. of the knife from the drum can be regulated by means of a handle .20 connected to the shaft 2. Go the opposite side o1 the apparatus to the knife to is a pen formed pipe Aby which Water may he supplied to the surface of the drum f when desired. 4

This apparatus may be worked continuously without the vacuum being broken. as the knife 11: is so arranged that the dry outer layer of: the yeast deposited upon the drum only is removed and any tendency of the vacuum to break is immediately arrested by the liquid containing the yeast which is H[)!':! \'l ll on to the drum through the perforations in the pipe 0 which is situated below and in close proximity to the knife What l claim is 1. A process of pressing yeast, consisting in depositing yeast in liquid form upon the surface of :11 revolving drum, then exhausting air from the drum to solidify the yeast onthe drum, and then removing the relotivcly dry outer layer of the deposited yeast leaving a relatively dump layer on the rum to prevent the breaking of o vacuum Within the drum.

2. A process of pressing yeast, consisting in depositing the yeast from a vessel containing it upon the surface of a revolving drum, then exhausting air from the drum,

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and then removing the relatively dry outer hausting the air from the drum, removin layer of the yeast and leaving areletively the outer layer of yeast from the surface 0 damp inner layer on the drum to prevent the the drum and spraying liquid containing 10 breaking of the vacuum within the drum. yeast upon the surface of the drum in prox- 5 3. In the process of pressing yeast, supunity to the part from which the deposited plying liquid containing yeast to a vessel yeast is removed. mto which a revolvingdrum extends; ex- EJNAR ALFRED MEYER. 

